1) Penicillin 2) Pipracil 1) Pipracil 
==Administration== Piperacillin is not absorbed orally, and must therefore be given by intravenous or intramuscular injection. It has been shown that the bacteriocidal actions of the drug do not increase with concentrations of piperacillin higher than 4-6xMIC, which means that the drug is concentration-independent in terms of its actions. Piperaci...
<chemical> 6-(((((4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl) amino)phenylacetyl)amino)-3,3-dimethyl-7-oxo-4-thia-1- azabicyclo(3.2.0)heptane-2-carboxylic acid. Semisynthetic, broad-spectrum, ampicillin-derived ureidopenicillin antibiotic proposed for pseudomonas infections. It is also used in combination with other antibiotics. ... Pharmacolog...
(pi-per´ә-sil″in) a broad-spectrum semisynthetic penicillin active against a wide variety of gram-positive and gram-negative bacteria; administered intramuscularly or intravenously as the sodium salt.
[n] - a synthetic type of penicillin antibiotic (trade name Pipracil) used for moderate to severe infections
Pipracil noun a synthetic type of penicillin antibiotic (trade name Pipracil) used for moderate to severe infections